Iñaki Baz Castillo writes:
Why? Obviously the INVITE **does include**
Proxy-Authorization.
Maybe RC3261 says that a server must not challenge for authentication a user
with From "Anonymous" <sip:anonymous@anonymous.invalid> ?
inaki,
you can configure twinkle to include p-p-i header that includes real
from uri and then use information in that to authenticate the caller.
-- juha